Systems have been available since the 1970s and have been developed to suit many applications. Energy radiated by the sun is collected by the solar panels and converted into heat to provide hot water, under floor heating and even heating a swimming pool.

Edmund Becquerel discovered PV technologies as early as 1938. It was not until 1950/1960s that efficient working cells were produced. These cells convert photos in sunlight to electrical energy using thin layers of semi conductors most commonly silicon. A metal plate then conducts the electricity away from the cells as DC

Electric air-source heat pumps, often used in moderate climates, use the difference between outdoor air temperatures and indoor air temperatures to cool and heat your home. Earning the ENERGY STAR means products meet strict energy efficiency guidelines set by the US Environmental Protection Agency and the Department of Energy.